/* ═══ F&M503 — Shared Subpage Styles ═══ */
/* Navigation + Footer + Back-to-Top */
/* https://fm503.com */

.subpage-nav {
    position: fixed !important; top: 0 !important; left: 0 !important; right: 0 !important; z-index: 100 !important;
    display: flex !important; align-items: center !important; justify-content: flex-end !important;
    height: 64px !important; padding: 0 48px !important;
    background: rgba(255,255,255,0.92) !important;
    backdrop-filter: blur(12px) !important;
    -webkit-backdrop-filter: blur(12px) !important;
    border-bottom: 1px solid transparent !important;
    transition: border-color 0.3s ease, background 0.3s ease !important;
}
.subpage-nav-brand {
    position: absolute !important; left: 48px !important; top: 50% !important;
    transform: translateY(-50%) !important;
    font-family: 'Hinge', var(--font-sans) !important;
    font-size: 20px !important; font-weight: 400 !important;
    letter-spacing: 2px !important; color: var(--ink) !important;
    text-decoration: none !important;
}
.subpage-nav.scrolled {
    border-bottom-color: var(--border) !important;
    background: rgba(255,255,255,0.97) !important;
}
.subpage-nav-links {
    display: flex !important; align-items: center !important;
    gap: 32px !important; list-style: none !important;
    white-space: nowrap !important; flex-shrink: 0 !important;
}
.subpage-nav-links a {
    font-size: 11px !important; font-weight: 400 !important; letter-spacing: 1.5px !important;
    color: var(--ink-soft) !important; text-decoration: none !important;
    text-transform: uppercase !important; position: relative !important;
    padding-bottom: 4px !important; transition: color 0.2s ease !important;
}
.subpage-nav-links .active {
    font-size: 11px !important; font-weight: 400 !important; letter-spacing: 1.5px !important;
    color: var(--ink) !important; text-transform: uppercase !important;
    padding-bottom: 4px !important;
}
.subpage-nav-links a::after {
    content: '' !important; position: absolute !important; bottom: 0 !important; left: 0 !important;
    width: 0 !important; height: 1px !important; background: var(--accent) !important;
    transition: width 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94) !important;
}
.subpage-nav-links a:hover,
.subpage-nav-links a.active {
    color: inherit !important;
}
.subpage-nav-links a:hover::after,
.subpage-nav-links a.active::after {
    width: 100% !important;
}
.subpage-nav-cta {
    font-size: 10px !important; font-weight: 500 !important;
    letter-spacing: 2px !important; padding: 9px 20px !important;
    border: 1px solid var(--ink) !important; color: var(--ink) !important;
    transition: all 0.25s ease !important; text-decoration: none !important;
    border-radius: 2px !important;
}
.subpage-nav-cta:hover {
    background: var(--ink) !important;
    color: var(--pure) !important;
}
.subpage-nav-cta::after { display: none !important; }

/* ── Subpage Nav Mobile ── */
@media (max-width: 768px) {
    .subpage-nav { padding: 0 16px !important; height: 54px !important; }
    .subpage-nav-brand { font-size: 16px !important; letter-spacing: 1px !important; left: 16px !important; }
    .subpage-nav-toggle { display: none !important; }
    .subpage-nav-links { gap: 10px !important; white-space: nowrap !important; flex-shrink: 0 !important; }
    .subpage-nav-links a, .subpage-nav-links .active { font-size: 10px !important; letter-spacing: 0.5px !important; }
}
@media (max-width: 380px) {
    .subpage-nav { padding: 0 10px !important; height: 48px !important; }
    .subpage-nav-brand { font-size: 12px !important; letter-spacing: 0px !important; left: 10px !important; }
    .subpage-nav-links { gap: 5px !important; white-space: nowrap !important; flex-shrink: 0 !important; }
    .subpage-nav-links a, .subpage-nav-links .active { font-size: 9px !important; letter-spacing: 0px !important; }
}

/* ── Footer (unified) ── */
.footer-links {
    max-width: 400px; margin: 0 auto 20px auto;
    display: flex; flex-direction: column; align-items: center; gap: 4px;
}
.footer-links a {
    font-size: 12px; color: rgba(255,255,255,0.5);
    text-decoration: none; padding: 2px 0; transition: color 0.2s;
}
.footer-links a:hover { color: rgba(255,255,255,0.85); }
.subpage-nav-toggle {
    display: none; background: none; border: none;
    cursor: pointer; width: 20px; height: 14px;
    flex-direction: column; justify-content: space-between; z-index: 201; padding: 0;
}
.subpage-nav-toggle span {
    display: block; width: 100%; height: 1px;
    background: var(--ink); transition: all 0.3s ease;
}
.subpage-nav-toggle-subnav{display:none;background:none;border:none;cursor:pointer;width:20px;height:14px;flex-direction:column;justify-content:space-between;z-index:201;padding: 0}

/* ── Back to Top ── */
.back-to-top {
    position: fixed; bottom: 32px; right: 32px; z-index: 90;
    width: 44px; height: 44px;
    background: var(--ink); color: var(--pure);
    border: none; border-radius: 50%; cursor: pointer;
    display: flex; align-items: center; justify-content: center;
    font-size: 18px; opacity: 0.85;
    transition: opacity 0.2s, transform 0.2s;
}
.back-to-top:hover { opacity: 1; transform: translateY(-2px); }
@media (max-width: 768px) {
    .back-to-top { bottom: 20px; right: 20px; width: 36px; height: 36px; font-size: 16px; }
}